<template>
  <div>
    <div>
      <button @click="insertText">insert text</button>
      <button @click="printHtml">print html</button>
      <button @click="disable">disable</button>
    </div>
    <div style="border: 1px solid #ccc; margin-top: 10px;">
      <Toolbar
          :editor="editorRef"
          :defaultConfig="toolbarConfig"
          :mode="mode"
          style="border-bottom: 1px solid #ccc"
      />
      <Editor
          :defaultConfig="editorConfig"
          :mode="mode"
          v-model="valueHtml"
          style="height: 400px; overflow-y: hidden;"
          @onCreated="handleCreated"
          @onChange="handleChange"
          @onDestroyed="handleDestroyed"
          @onFocus="handleFocus"
          @onBlur="handleBlur"
          @customAlert="customAlert"
          @customPaste="customPaste"
      />
    </div>
    <div style="margin-top: 10px;">
      <textarea v-model="valueHtml" readonly style="width: 100%; height: 200px; outline: none;"></textarea>
    </div>
  </div>
</template>

<script>
import '@wangeditor/editor/dist/css/style.css'
import { onBeforeUnmount, ref, shallowRef, onMounted } from 'vue'
import { Editor, Toolbar } from '@wangeditor/editor-for-vue'

export default {
  components: { Editor, Toolbar },
  setup() {
    // 编辑器实例，必须用 shallowRef，重要！
    const editorRef = shallowRef()

    // 内容 HTML
    const valueHtml = ref('<p>hello</p>')

    // 模拟 ajax 异步获取内容
    onMounted(() => {
      setTimeout(() => {
        valueHtml.value = '<p>模拟 Ajax 异步设置内容</p>'
      }, 1500)
    })

    const toolbarConfig = {}
    const editorConfig = { placeholder: '请输入内容...' }

    // 组件销毁时，也及时销毁编辑器，重要！
    onBeforeUnmount(() => {
      const editor = editorRef.value
      if (editor == null) return

      editor.destroy()
    })

    // 编辑器回调函数
    const handleCreated = (editor) => {
      console.log('created', editor);
      editorRef.value = editor // 记录 editor 实例，重要！
    }
    const handleChange = (editor) => {
      console.log('change:', editor.getHtml());
    }
    const handleDestroyed = (editor) => {
      console.log('destroyed', editor)
    }
    const handleFocus = (editor) => {
      console.log('focus', editor)
    }
    const handleBlur = (editor) => {
      console.log('blur', editor)
    }
    const customAlert = (info, type) => {
      alert(`【自定义提示】${type} - ${info}`)
    }
    const customPaste = (editor, event, callback) => {
      console.log('ClipboardEvent 粘贴事件对象', event)

      // 自定义插入内容
      editor.insertText('xxx')

      // 返回值（注意，vue 事件的返回值，不能用 return）
      callback(false) // 返回 false ，阻止默认粘贴行为
      // callback(true) // 返回 true ，继续默认的粘贴行为
    }

    const insertText = () => {
      console.log(editorRef.value)
      const editor = editorRef.value
      if (editor == null) return
      editor.insertText('hello world')
    }

    const printHtml = () => {
      const editor = editorRef.value
      if (editor == null) return
      console.log(editor.getHtml())
    }

    const disable = () => {
      const editor = editorRef.value
      if (editor == null) return
      editor.disable()
    }

    return {
      editorRef,
      mode: 'default',
      valueHtml,
      toolbarConfig,
      editorConfig,
      handleCreated,
      handleChange,
      handleDestroyed,
      handleFocus,
      handleBlur,
      customAlert,
      customPaste,
      insertText,
      printHtml,
      disable,
    };
  }
}
</script>
